Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
manh trung » manh tung, thanh trung, manh hung
trung tran » trung tuan, trung thanh, trung tam
quang dong » quang dung, quan dong, quang cuong
thanh cha » thanh ha, thanh phan, thanh pham
thanh nha » thanh nhan, thanh ha, thanh nga
dong tai » dung tai, luong tai, cong tac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu sach) OR (chieu sang)) - manh trung tran quang dong tai ((thanh cha) or (thanh nha))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sach) OR (chieu sang)) - manh trung tran quang dong tai ((thanh cha) OR (thanh nha)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((chieu sach) OR (chieu sang)) - manh trung tran quang dong tai ((thanh cha) or (thanh nha))".
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sach) OR (chieu sang)) - manh trung tran quang dong tai ((thanh cha) or (thanh nha))*.